Hi mummies .. my boy is 9 weeks old and im training him to sleep through the night. Past 2 nights, he ate at ard 1am and slept till abt 7am. However, he did wake up abt 2 or 3 times in the middle of the night and we just gave him the pacifier (he didnt slp with pacifier after the feed) and he did not protest for milk, continued to sleep. Is it ok for us to use pacifier to lengthen his sleep this way?